Valve.



RICHARD RHODA, OF GOATESVILLE, PENNSYLVANIA.

Specification of Letters Patent.

Patented June 12, 1906.

Application filed li'svcmber 14, 1994. Serial No. 232.652.

T0 ail-Z whom it may concern:

Be it known that I, RICHARD RHODA, a citizen of the United States,residing at Goatesville, in the county of Chester and State ofPennsylvania, have invented certain new and useful Improvements inValves, of which the following is a. specification, refer ence being hadtherein to the accompanying drawings.

My invention relates to valves, and more particularly to that classwherein a packing ring or disk is employed as a valve-seat or'on thevalve-head, one of the objects being to provide a device of thecharacter described where'the valve is provided with an annular recesswith deflectin or receding walls, so as to obviate the possiliility of apacking-ring becomin loosened by the action of the valve.

A furt er object of my invention is to provide a device of the characterdescribed wherein a packing-ring of yielding malleable metal may be usedin place of the ordinary packing or guttaspercha ring now commonl Y usedin valves of my character, and the pecul iar construction of the ringgives it a large surface on the facets reduce the wear on the ring andon the valve seat.

Herctofore in valves of this character the packing has been in the formof adisk or ring, of guttaercha or some similar substance which quicklywears away and the pieces of which are constantly being forced into thepipes or becoming lodged in the valves and causing them to becomeinoperative and useless until the waste pieces of the ring are removedor the valve repaired. By the use of my device the wear is reduced to aminimum, causing a saving of time in removing and re placing rings afterthey have become inoperative, and also lessening the cost and resultingin general superiority of service.

The structural features of my invention, by means of which these objectsare attained, will be made clear by an examination of the specification,taken inconncction with the accompanying drawings in which the samereference-numerals indicate corresponding parts throughout, and in whichFigure l is a sectional view of a water-cylinder in a pressure-pump,showing the valveseat and my improved valve-ring in place. Fig. 2 is across-section showing my improved packing-valve ring partly in positionwith the rib resting in the annular recess. Fig. 3 is a cross-section ofsaid ring, showing same inc erative position and the rib expanded in t eannular recess. the ring.

i desi nates a valvehead or the part thereof tiat carries the packing. 2is the valve-seat, and 3 is an annular recess in the valve-head. Therecess 3 expands inwardly, so that it is narrowest at the entrancethereto and widest at its innermost part. The packing-ring 4 iscomprised of an annular rib 5, provided with a V-shaped groove 6 in theface thereof, leaving points 7 on either side and a facing8 proj ectmgon either side of the rib, thus giving said ring the form of an invertedT. This ring may be made of guttapercha or any similar substance, or itmay be made of an suitable metal, preferably that which is yie ding incharacter. It comprised of a softer substance than metal, the face 8 iswhere the greatest wear takes place. The sides of the rib 5 arevertical, so that when the same is inserted into the annular recess 3the points 7 rest against the roof of said recess, the rib beingconstructed so that its height is a trifle greater than the depth of therecess, which leaves the points resting against the roof of the recessand leaves an intervening space caused by the groove and also a space oneach side of the rib caused b r the receding walls of said recess. Theri being of a height greater than the depth of the recess, when the ringis forced into position with the valve-head resting upon the outwardl-projecting face of the ring, the rib is cause to expand and the voints7 are forced to each side and rest in t 1c corners of Fig. 4 is across-section of the recess, which expanding of the rib causes.

the groove 6 to practically disappear and the top of the rib to becomelevel, or nearly so, and to rest against the roof of the recess.

I am aware of structures having some features in common with myinvention, but differing in other essential features-as, for instance,in providing the rib with a deep groove extending substantially to itsbase and virtually dividing the rib into two ridges andand anyinfluenceexerted to dislodge the same must compress the metal itself in linesdiametrically op osed to each other. In other cases the heiglit of therib above the plane of the ring is substantially the same as the vertioal depth of the recess, and to force the same to its seat and allowfor expanding it becomes necessary to provide a correspondingrotuberance on the other face of the ring. In t 's construction it isnot only difiicult to efficiently seat the ring, but it becomesindispensable to finally dress the face of the same when in place-aninconvenient and expensive operation.

Having thus described my said invention, what I claim as new, and desireto secure by Letters Patent, is

1. In a valve, a packing-ring havin on one side a plane face and on theother si e a rib, the rib having a move extending longitudinally thereofand to a de th materially less than the hei ht of the rib, incombination with a valveead rovided with a recess arranged to receive t1e rib, said recess having inwardl -diverging walls and a substantiallyflat roof the vertical de th of the recess being slightly less than theeight of the rib and the mouth of the recess of substantially the samewidth as the rib.

2. In a valve, a packing-ring having on one side a plane face and on theother side a rib disposed ata distance from either edge, the rib havinga groove extending longitu inally 1 thereof and to a de th materiallyless than the height of the rili, in combination with a valve-headprovided with a recess arranged to receive the rib, said recess havinginwardly-diverging walls and a substantially flat roof, the de th of therecess measured on its inclined wa ls bein substantially equal to theheight of the ri and the mouth of the relcess of substantially the samewidth as the r1 3. In a valve, a packing-ring of malleable metal havinon one side a plane face and on the other side an annular rib withvertical walls disposed at a distance from either edge of the ring, therib having an annular V-shaped groove in its up er face of a depthmaterially less than the height of the rib, in combination with avalve-head of harder metal provided with a recess arranged to receivethe rib, said recess having inwardl -diverging walls and a substantiallyflat roof: the vertical de th of the recess being slightly less than theeight of the rib, the depth of the recess measured on its inclined wallssubstantially equal to the height of the rib, and the mouth of therefiess of substantially the same width as the I'l In testimony whereofI hereunto affix my signature in presence of two witnesses.

' RICHARD RHODA.

Witnesses:

S. G. Coon, WILLIAM S. G. COOK.

